This file photo from Feb. 14, 2013, shows the tails of US Airways aircraft at Philadelphia International Airport. / Matt Rourke, AP

by Ben Mutzabaugh, USA TODAY

by Ben Mutzabaugh, USA TODAY

Passengers on a US Airways flight headed from Italy to Philadelphia got an unexpected stopover in Ireland this weekend after several attendants became sick.

US Airways Flight 715 was en route from Venice to Philadelphia on Saturday when it diverted to Dublin after the attendants reported nausea, dizziness and watery eyes, according to The Associated Press.

It was unclear what caused the ailments, but the attendants were given medical clearance by Sunday and were back in the USA as of Monday morning, US Airways spokeswoman Michelle Mohr tells Today in the Sky.

"Our flight attendants were evaluated by medical professionals, released and returned stateside yesterday," Mohr says to Today in the Sky on Monday morning.

The Airbus A330 operating Flight 175 was carrying 181 passengers and 12 crew members, according to Mohr. Passengers on the diverted flight spent the night in Dublin.

"We re-accommodated our customers on other flights to PHL (Sunday). None of our pilots or passengers reported any medical issues," Mohr adds. "Not all of the flight attendants did either, but all went together for evaluation."

The National Transportation Safety Board is investigating Saturday's flight, according to AP.